Finally got the Lunati 60403

I'd be interested to know how it performs and sounds at idle. I just ordered a 60404 ( the next one larger) for my 340, and just recieved it as well, but not quite ready to install it, as I'm working on a 2nd hood with a six pack scoop to clear the M1 intake that will be going in at the same time. I'm also running aluminum heads, and TTI step headers with 430 gears. I currently have a 509 lift cam.